213458 divided by 8 
We're looking to find how many times 8 goes into 213458.

On to step 1:
When dividing 2 by 8, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 8

Let's proceed to step 2:
The number 8 fits into 21 2 times, leaving a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 16 from 21 and we're left with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 8

Going ahead to step 3:
If we divide 53 by 8, we get 6 and a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 26.0
If we subtract 48 from 53, we get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 8

On to step 4:
8 can be fit into 54 6 times, resulting in a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 266.0
If we subtract 48 from 54, we get 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 8

Moving on to step 5:
65 divided by 8 is 8 with a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 2668.0
Subtract 64 from 65 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 8

Let's proceed to step 6:
When dividing 18 by 8, we get 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 26682.0
If we take 16 away from 18, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
The number 8 fits into 20 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 26682.2
If we subtract 16 from 20, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
When dividing 40 by 8, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 26682.25
Deduct 40 from 40 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26682.25
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 26682.25
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 26682.25, with a leftover of 0.0.